Java.lang.Character.Subset Class in Java (original) (raw)

Last Updated : 13 Sep, 2023

Character.Subset Class represents particular subsets of the Unicode(standards using hexadecimal values to express characters - 16bit) character set. The subset, it defines in Character set is UnicodeBlock.Declaration :

public static class Character.Subset extends Object

Constructors :

• protected Character.Subset(String str) : Constructs new subset instance.

Methods:

• equals() : java.lang.Character.Subset.equals() tells whether the two Subset Object are equal or not.Syntax :
  public final boolean equals(Object o)
  Parameters :
  o : object to be compare with.
  Return :
  true : if o equals argumented object, else false.
• hashCode() : java.lang.Character.Subset.hashCode() returns the hashCode value of the Subset..Syntax :
  public final int hashCode()
  Parameters :

Return :
hashCode of the argumented object. * toString(): java.lang.Character.Subset.toString() returns name of the Subset.Syntax :
public final String toString()
Parameters :

Return :
string representation of the argumented object. Java `

// Java Program illustrating the use of Character.Subset class Methods.

import java.lang.*;

public class CharacterSubsetDemo extends Character.Subset { CharacterSubsetDemo(String s) { // Use of super keyword : // Invokes immediate parent class constructor. super(s); }

public static void main(String[] args) { // Initializing two Subsets. CharacterSubsetDemo a = new CharacterSubsetDemo("geeks"); CharacterSubsetDemo b = new CharacterSubsetDemo("for");

  // use of equals() : 
  boolean check2 = a.equals(a);
  System.out.println("Is a equals a ? : " + check2);
  check2 = b.equals(a);
  System.out.println("Is b equals a ? : " + check2);
  System.out.println();
  
  // Use of hashCode() : 
  int check1 = a.hashCode();
  System.out.println("hashCode " + a + " : " + check1);
  check1 = b.hashCode();
  System.out.println("hashCode " + b + " : " + check1);
  System.out.println();
  
  // Use of toString() : 
  System.out.println("a : " + a.toString());
  System.out.println("b : " + b.toString());

} }

`

Output :

Is a equals a ? : true Is b equals a ? : false

hashCode geeks : 366712642 hashCode for : 1829164700

a : geeks b : for

**Note :**lang.Character.Subset Class inherits others methods from java.lang.Object class. For details about java.lang.Object, refer :Object class in Java.